/Engine/Source/Runtime/TypedElementRuntime/Public/Elements/Framework/TypedElementSelectionSet.h
Get the handle of every selected element, optionally filtering to elements that implement the given interface.
[TArray](API\Runtime\Core\Containers\TArray)< [FTypedElementHandle](API\Runtime\TypedElementFramework\Elements\Framework\FTypedElementHandle) > GetSelectedElementHandles ( const [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UInterface](API\Runtime\CoreUObject\UObject\UInterface) > InBaseInterfaceType ) const